Windshield wiper



Dec. 14 1926. V 1,610,361 J. A. COLVIN' WINDSHIELD WIPER Filed Nov. 9,1925 'I II/ fizz/efifor Patented bee; 14, 1926.

U'NITED STATES PATENT OFFICE.

JAY A. COLVIN,, OF CHICAGO, ILLINOIS.

WINDSHIELD WIPER.

Application filed November "9, 1925. Serial No. 67,740.

My invention relates to improvements in windshield wipers and has forone object to provide a windshield wiper which will be stronger and moredurable than those at present in use. Another object is to provide a'wiper which when out of operation inayu be so manipulated as to relievethe .pressure of the rubber squeegee against the glass of the windshieldand thereby prevent permanent distortion of the squeegee. Another object;is to provide a wiper wherein a stiff and. heavy wiper arm may be usedso that the wiper will have suflicient strength to clean the windshieldeven when the windshield is coated with snow, ice and Figure l is adetail front elevation of an utomobile windshield showing the wiper inplace;

Figure'2 is a sectionalong the line 2-2.

of Figure 1 on an enlarged scale;

*Figure 3 is a section along the line 3.3 of Figure 2 on a furtherenlarged scale;

Figure 4 is a perspective of the end of the driving sleeve. 7

Like parts are indicated by like characters throughout.

A is a glass windshield or vehicle window. In this case it is. shown asa part of a closed body, A being a rigid upper member in which thewindshield is' mounted. A is the roof of the vehicle. A is the vacuummotor which drives the cleaner.

'A is a pipe leading from the motor hous- 40 ing and connected by meansof a tubing A with the vehicle motor not here shown whereby the powerfor operating the vacuum motor is provided.

B is the cylindrical body of the motor. Projecting therefrom is a valvehousing B with valve 13 whereby the motor may be thrown into and out ofoperation. B B are hollow hearing bosses contained within the motorhousing. B is the driving sleeve mounted for rotation within the bossesor bearings B B is a lever mounted on the sleeve B and held againstrotation with respect thereto by the set screw B". B is a wrist pinpivoted in the lever B adapted to connect with the driving piston nothere shown.

' sleeve 13*.

The sleeve Bextends clear across the housing and is open at both ends.

. C is a rock shaft slidably mounted in the It carries at one end arocker arm C pinned thereto, which arm is enlarged at its lower end asat C and'carries the rubber or other suitable squeegee C adapted toengage the face of the windshield. The sleeve B is slotted at C toengage a pin C on the rod C. It is also notched at C and provided with astop lug C C is a manipulating lever pinned to the inner end of the rodG, there beinga coil spring C surrounding the rod and interpdsed betweenthe lever C and the end of the sleeve B. This spring-tends to draw theshaft C inwardly and cause the squeegee C? to' exert a pressureagainst'the face of the windshield, the slot 0 being deep enough topermit this while at the same time: of sufiicient depth not to limit theinward movement of the shaft.

When it is desired to throw the wiper out of operation the rod is pushedforward compressing the spring and 'then rotated with res ect to thesleeve so as to bringthe pin (J out of engagement with the slot C2 and.into engagement with the notch C thus holding it against rotation andpermit ting the squeegee to remain out of contact with the surface oftthe' windshield thereby permitting the squeegee to hang in a normal andunbent anduncompressedposition.

The hand lever C may also be manipulated if desired to rotate thesqueegee independent of the motive power. Since the arm C is a rigid andstiff one it does not tend to bend or yield and the coil sprin may bemade of any desired strength and stiffness so as to give any desiredpressure of the squeegee upon the surface of the windshield.

The motor tooperate the squeegee might be.any suitable type, either theone shown or any other type of motor used for such work. Therelativelylong coil spring permits the squeegee to conform" to thevariations in the contour of the windshield or window surface in a muchmore satisfactory manner than is the case when a single flexiblesqueegee arm is used andthe use of the coil spring makes it easier toadjust the tension of the squeegee on the windshield than is the casewhen a single spring arm is. used.

It will be evidentthat While I have shown an operative device, stillmany changes might be made in the size, shape and disposition of partswithout departing materially from the spirit of my invention and I Wishtherefore that my showing be taken as in a large sense as diagrammatic,and

that the scope of the invention'is tobe de-,

termined from the claims.

I claim: t

l. Ina Windshield Wiper, a motor, a sleeve adapted to be oscillatedthereby, a shaft slidable in the sleeve, a rock arm carried by.

the shaft, a squeegee carried by the arm, the end of the sleeve beingslotted, a pin on the [shaft adapted to engage the-slot to hold shaftand sleeve against relative rotation.

2. In awindshield Wiper, a motor, a sleeve adapted to be oscillatedthereby, a shaft slidable in the sleeve, 2. rock arm carried by theshaft, a squeegee carried by the arm, the

end of the sleeve being slot-ted, a pin on the shaft adapted to engagethe slot to hold shaft "and sleeve against relative rotation, meansforexerting longitudinal'pressure on 1 the shaft to hold the squeegeeagainst the Windshield. I

3. In a Windshield Wiper, a motor, a sleeve adapted to be oscillatedthereby, a shaft slidable in the sleeve, a rock arm carried by theshaft, a squeegee carried by the arm, the

end of the sleeve being slotted, a pin on the shaft adapted to engagethe slot to hold shaft and sleeve against relative rotation, means forexerting longitudinal pressure on the shaft to hold the squeegee againstthe Windshield, and a handle by which the shaft may be slid in anopposite direction to hold the squeegee out of engagement with thewindshield. r

4:. In a Windshield Wiper, a motor, a sleeve adapted to be oscillatedthereby, a shaft slidable in the sleeve, a rock arm carried by theshaft, a squeegee carried by the arm, the end of the sleeve beingslotted, a pin on the shaft adapted to engage the slot to holdshaft'andsleeve against relative rotation,

the shaft to hold the squeegee against the -Windshield, and a handle bywhich the shaft JAY A. ooLvm.

' means for exerting longitudinal pressure on

